Notices
Marine Electronics Forum

Furuno RezBoost?

Old 08-27-2017, 07:51 PM
  #1  
Senior Member
Thread Starter
 
Join Date: Jan 2008
Location: Cedar Key, FL
Posts: 1,264
Received 240 Likes on 154 Posts
Default Furuno RezBoost?

How does RezBoost compare with CHIRP?
Old 08-28-2017, 04:17 PM
  #2  
Senior Member
 
Join Date: Sep 2011
Posts: 2,813
Received 204 Likes on 158 Posts
Default

Originally Posted by m9000 View Post
How does RezBoost compare with CHIRP?
How deep aren't you fishing? I can see fish and bait separation with my TZ2 but fish under 100' and mostly up to 40'.
Old 08-28-2017, 06:41 PM
  #3  
Senior Member
 
Join Date: Jun 2017
Posts: 613
Likes: 0
Received 38 Likes on 35 Posts
Default

Originally Posted by m9000 View Post
How does RezBoost compare with CHIRP?
My understanding is that ResBoost gets conventional sonar's resolution closer to that of CHIRP. CHIRP still will be better but more costly.
Old 08-28-2017, 06:49 PM
  #4  
Senior Member
Thread Starter
 
Join Date: Jan 2008
Location: Cedar Key, FL
Posts: 1,264
Received 240 Likes on 154 Posts
Default

Originally Posted by davepjr71 View Post
How deep aren't you fishing? I can see fish and bait separation with my TZ2 but fish under 100' and mostly up to 40'.
80% < 100 ft
Old 08-28-2017, 06:55 PM
  #5  
Senior Member (used to be B-Faithful)Captains Club MemberPLEDGER Admiral's Club Member
THT sponsor
 
Join Date: Dec 2002
Location: Annapolis, MD
Posts: 18,488
Received 2,308 Likes on 1,164 Posts
Default

with p66 transducer.
Old 08-29-2017, 04:11 AM
  #6  
Senior MemberCaptains Club Member
 
Join Date: Feb 2005
Location: Massachusetts
Posts: 2,218
Likes: 0
Received 295 Likes on 167 Posts
Default

Originally Posted by iFishMD View Post
with p66 transducer.
What settings are you using to get those nice fish arches? Transmission power, scroll, etc? Thanks
Old 08-29-2017, 05:48 AM
  #7  
Senior MemberCaptains Club Member
 
Join Date: Feb 2005
Location: Falmouth, MA
Posts: 6,184
Received 689 Likes on 426 Posts
Default

Originally Posted by m9000 View Post
How does RezBoost compare with CHIRP?
from a technology standpoint, if you assume equally good transducers, in shallow water the approach rezboost takes can likely approach chirp performance.

however, keep 2 things in mind...
-chirp transducers are generally highly superior to non-chirp transducers, even when the chirp transducers are operating at fixed frequencies
-in deeper water you are going to see a much bigger difference between the type of technology rezboost uses compared to chirp.
Old 08-29-2017, 06:36 AM
  #8  
Senior Member (used to be B-Faithful)Captains Club MemberPLEDGER Admiral's Club Member
THT sponsor
 
Join Date: Dec 2002
Location: Annapolis, MD
Posts: 18,488
Received 2,308 Likes on 1,164 Posts
Default

Originally Posted by Nomans View Post
What settings are you using to get those nice fish arches? Transmission power, scroll, etc? Thanks
Transmit rate is set to max - 20. (I like as many pictures as possible). scroll is 1:1. TVG is set to 5 (doesnt really matter, too shallow). I will often adjust the gain some to pick up thermoclines, etc. Rezboost was set on "enhanced"

There is some clutter at the top but it was a choppy day and my transom mount transducer can pick up some surface bubbles.

Fish in that photo were schoolie keeper-sized striped bass

I still think the fixed frequency Furuno units are as good as any at marking fish. Heck that is with a $99 plastic transom mount transducer. I will take over many of the CHIRP units I have used

BTW I find Rezboost good at depths up to 120' with the P66. Unfortunately I can't say for any deeper since I fish near shore off the coast and the Chesapeake Bay.
Old 08-29-2017, 10:01 AM
  #9  
Senior Member
 
Join Date: Sep 2011
Posts: 2,813
Received 204 Likes on 158 Posts
Default

Originally Posted by m9000 View Post
80% < 100 ft
Then you really don't need CHIRP. You can buy a 1kW Airmar 50/200 that will perform just as good as a 1kW Airmar CHIRP. As iFishMD is showing you the Rezboost does a great job.

One of the reasons the CHIRP does perform better compared to most Rezboost users is a 1kW high end ducer compared to a P66 or B60. However, in under 100 ft you can get great separation using Rezboost. I have pics of bait with striped bass around them and stacked fish where I can see each one with good arches.
Old 08-29-2017, 10:33 AM
  #10  
Member
 
Join Date: Jan 2007
Location: Barcelona, Spain
Posts: 89
Likes: 0
Received 5 Likes on 5 Posts
Default

One other reason for the arches is the very wide cone/angle this 600W transducers have vs most chirp, unless compared to the wide chirp ducers. The 50kHz is 45º while the 200 is 12º. The B260 has 19º and 6º respectively while the B265LH is 25º to 16º in low frequency and 10º to 6º for the high. You will mark more fish and normally longer arches with the B60 compared to the other 2 transducers. Its very important to choose transducers carefully for the type of fishing you want to do and sometimes 1 ducer is no enough, I have three.
Likes:
Old 08-29-2017, 10:59 AM
  #11  
Admirals Club Admiral's Club Member
THT sponsor
 
Join Date: Jan 2016
Posts: 7,752
Received 640 Likes on 427 Posts
Default

The Q of a CHIRP transducer is superior to the non CHIRP transducers. Rez boost as stated is able to process closer to the level of CHIRP in shallow water.
Old 08-29-2017, 11:08 AM
  #12  
Senior Member
 
Join Date: Feb 2005
Location: Norway
Posts: 16,430
Likes: 0
Received 1,128 Likes on 918 Posts
Default

It's much easier to drive a high Q-factor transducer than a low Q-factor CHIRP transducer. A transducer with high Q-factor will start to resonate so I would say it's the high Q-factor transducer which is more efficient.

On the negative side a high Q-factor transducer will continue to resonate for a period after the drive signal is removed, this will add to the pulse length and the thus decrease the resolution. A high Q-factor transducer will have a narrow bandwidth so it will give low resolution if used in CHIRP mode.
Old 08-29-2017, 12:01 PM
  #13  
Senior Member (used to be B-Faithful)Captains Club MemberPLEDGER Admiral's Club Member
THT sponsor
 
Join Date: Dec 2002
Location: Annapolis, MD
Posts: 18,488
Received 2,308 Likes on 1,164 Posts
Default

Originally Posted by rmenendez View Post
One other reason for the arches is the very wide cone/angle this 600W transducers have vs most chirp, unless compared to the wide chirp ducers. The 50kHz is 45º while the 200 is 12º. The B260 has 19º and 6º respectively while the B265LH is 25º to 16º in low frequency and 10º to 6º for the high. You will mark more fish and normally longer arches with the B60 compared to the other 2 transducers. Its very important to choose transducers carefully for the type of fishing you want to do and sometimes 1 ducer is no enough, I have three.

Yup. completely agree. I fish the Chesapeake Bay and near shore coastal so the deepest I see is 120' of water and mostly fish in 60' or less. Though the P66/B60 is considered an entry transducer, it actually suits my fishing best due to the wide cone of the low frequency, especially since I fish mostly on suspended fish. I have friends who have spent the money on high end transducers, both 1kw and CHIRP transducers, only to come back to the P66 or B60 for the fishing we do here on the Chesapeake Bay.
Old 08-30-2017, 04:48 AM
  #14  
Senior Member
Thread Starter
 
Join Date: Jan 2008
Location: Cedar Key, FL
Posts: 1,264
Received 240 Likes on 154 Posts
Default

Thanks guys for the input. I was always under the impression that Furuno made the best recreational sonar units, but many of the experts on this board and some of the users have shown that the other manufacturers have caught up and in some cases probably produced better units than for Furuno. I am still deciding, but it looks like the combination of the price point and features (touchscreen) of the 12 inch TZ2 is very attractive.
Old 08-30-2017, 07:12 AM
  #15  
Admirals Club Admiral's Club Member
THT sponsor
 
Join Date: Jan 2016
Posts: 7,752
Received 640 Likes on 427 Posts
Default

Originally Posted by m9000 View Post
Thanks guys for the input. I was always under the impression that Furuno made the best recreational sonar units, but many of the experts on this board and some of the users have shown that the other manufacturers have caught up and in some cases probably produced better units than for Furuno. I am still deciding, but it looks like the combination of the price point and features (touchscreen) of the 12 inch TZ2 is very attractive.
Furuno offers CHIRP as well, it is available on Furuno products when you use the DFF1-UHD sounder module.
Old 08-30-2017, 08:12 AM
  #16  
Senior Member
 
Join Date: Feb 2005
Location: Norway
Posts: 16,430
Likes: 0
Received 1,128 Likes on 918 Posts
Default

Originally Posted by m9000 View Post
Thanks guys for the input. I was always under the impression that Furuno made the best recreational sonar units, but many of the experts on this board and some of the users have shown that the other manufacturers have caught up and in some cases probably produced better units than for Furuno. I am still deciding, but it looks like the combination of the price point and features (touchscreen) of the 12 inch TZ2 is very attractive.
Furuno is not competitive in performance when it comes to sounders integrated in the MFD since they don't have integrated CHIRP, but ReezBoost is a nice way of improving the resolution of conventional transducers. Customers often have these transducers already installed, and models like P66 and B60 will with ReezBoost (or a Navico sounder using short pulse lengths) give good performance for the money. A CHIRP capable sounder with a low Q-factor transducer will give much better resolution, but the transducers are typically much more expensive.

Below are a two screen shots from a B75H transducer which can be said to be the CHIRP equivalent to B60 at 200 kHz. It gives excellent performance, here it's combined with a BSM-2, an integrated NSS Evo2 and Evo3 sounders would have given even better resolution. I'm now typically using the more expensive B175H-W transducer when fishing so I don't have any screen shots of B75H with Evo2 or Evo3. B75H I use when cruising since it's the transducer I have which is best in both holding the bottom and to show bait fish at speed.

A B75 is twice the price of B60 and almost 5 times the price of P66. It's only covering the High CHIRP band, but by using 130 kHz fixed frequency the bottom coverage will increase significantly compared to High CHIRP (Look at the arcs in the first screen shot). But for a lot of users a P66 or B60 transducer will do the job and save quite some money compared to a CHIRP transducer.
Attached Images   
Old 08-30-2017, 09:00 AM
  #17  
Member
 
Join Date: Jan 2007
Location: Barcelona, Spain
Posts: 89
Likes: 0
Received 5 Likes on 5 Posts
Default

There is a lot of hype about chirp. I jumped on the bandwagon early with a Raymarine unit and B265LH and changed to Furuno for everything, including a DFF1-UHD and can say they are very good, IMHO, for many situations BUT not for all types of fishing. I Installed an additional DFF3 for my deep fishing with an Airmar R309 3kW unit and for THAT type of fishing I find it better. For my chumming for giant tuna the B265LH is poor, too narrow an angle, just like the R309. I installed a B175HW for my DFF1-UHD and its great. Again, chirp or non chirp, the angle you select is key for the type of fishing you do. When you are looking at a relatively good size fish they show up separate anyway. I don't need to see individual sardines.
Old 08-30-2017, 09:34 AM
  #18  
Senior Member
 
Join Date: Apr 2010
Location: SWFL
Posts: 3,146
Received 414 Likes on 215 Posts
Default

You really need to start w/ what you are using your equipment for before picking one tech over the other. Depth, whether you are looking for fish in the column or on the bottom, whether bottom structure/composition is important, what you want to see while running, all go into driving you to one technology or another (or a combination of technologies).

I had a TZT2 w/ a B60 and the rezboost feature, at least in <150ft, really did not make a big diff. The bottom discrimination feature (it puts pix of mud/sand/rock at the bottom of the screen) was more of a gimmick as you mostly can tell that by looking at the screen anyway. And it only works < 10mph or so which made it useless for finding new bottom while running.
Old 08-30-2017, 10:11 AM
  #19  
Senior Member
Thread Starter
 
Join Date: Jan 2008
Location: Cedar Key, FL
Posts: 1,264
Received 240 Likes on 154 Posts
Default

I am always fishing less than 100ft (except for the Keys week) and usually less than 80 feet in the northeastern Gulf of Mexico. I am mainly targeting gag and red grouper. The red grouper typically hang out over flat stretches of lime rock with grooves and pockets in the rock. Based on my sonar experience and watching videos of divers, these grouper rarely move more than a couple feet off of the bottom. The gag grouper tend to aggregate more on vertical structures, and they hang out very close to or in the structure and it is very rare to see a fish so far away from the structure that you get the classical arch picture.

When I am fishing for suspended fish, it's usually amberjack or red snapper and my current Raytheon 1250 unit shows them very clearly – or I could just look over the side of the boat and see the fish!

With my aging eyes, I want the 12 inch screen and the Furuno price point on the 12 inch screen + transducer with touch control is better than Garmin or Simrad units with touch control. For my circumstances, it's not clear that the CHIRP technology will perform better, and is certainly more expensive to purchase a CHIRP unit and transducer.
Old 08-30-2017, 10:12 AM
  #20  
Member
 
Join Date: Jan 2007
Location: Barcelona, Spain
Posts: 89
Likes: 0
Received 5 Likes on 5 Posts
Default

It is what I would suggest to anybody thinking of fishing as I believe no one technology is best for all types. I am now also considering the DFF3D as I have the Maxsea/Nobeltec with bathymetry to first survey bottom structure and for this you need a very narrow cone to be accurate or WAASP/DFF3D type which saves lots of time and fuel in generating a survey.

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.